Jinx,

As my current timing routines are geared to 4MHz, it was my objective to
use the RC oscillator at 4MHz.
The RC oscillator wave form at 4MHz is a clean square wave with rounded
upper corners.
The amplitude, turn on and turn off times of the wave form are more than
acceptable.
I did insert 10 tick (clock pulse) time delays after I/O functions to
assure reliability.

Sincerely,
Ned Seith
Nedtronics
59 3rd Street
Gilroy, CA 95020
(408) 842-0858
ned@nedtron.com

At 05:16 PM 8/17/01 +1200, you wrote:
> > I am fully aware of the Microchip specifications as
> > indicated by my comment "not-recommended by
> > Microchip" within my post. Rather than speculating on
>
>Referring back to
>
>http://home.clear.net.nz/pages/joecolquitt/0f84rc.html
>
>you'll see that the frequency was measured up to 5.84MHz
>(using 2k2 +22p). At this point the waveform has become
>distorted and personally I wouldn't trust it. I can't say if the
>limits suggested by Microchip are to guarantee the survival
>of the F84A's RC internal circuitry or the perfomance of the
>software. The F628 is specced to go to 8MHz with RC (which
>you could probably exceed) if you need faster s/w, whilst the
>original F84 on paper tops out at 4.7MHz
>
>--
>http://www.piclist.com hint: The PICList is archived three different
>ways.  See http://www.piclist.com/#archives for details.

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.